The Bob Sheppard “Signature Series”, Generation 3. The latest version of Bob Sheppard’s personal favorite is a fusion of vintage large chamber models and advanced baffle profile that significantly improve response and dynamic range. Experience the ease, fluidity, nuance of expression and powerful thickness this mouthpiece offers. Bob plays exclusively on his newest Generation 3 model! This wonderful Mouthpiece is now a Part of our Retro-Revival Modern Line! Each Piece is made from the finest German Rubber Rod and is Precision finished with precise facing curves and response.